Recovery of tungsten carbide from scrap mining bits

Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step

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Details

156344, 156631, 156664, C23F 102

Patent

active

041705130

ABSTRACT:
Tungsten carbide inserts are recovered from scrap mining bits by treatment in a sulphuric acid bath to eat away part of the steel surrounding the inserts and then heating the bit and vibrating the heated bit to knock out the inserts. In a modification used on cross-type bits, heat and vibration alone are used.

REFERENCES:
patent: 3375181 (1968-03-01), Koech
patent: 4106977 (1978-08-01), Klaus

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